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kondor19780726 [428]
3 years ago
10

In a lab experiment, 1900 bacteria are placed in a petri dish. The conditions are such

Mathematics
1 answer:
GREYUIT [131]3 years ago
3 0

Answer:

393 bacteria

Step-by-step explanation:

First find how much it would increase per hours :

1900 / 29 = 65.5172414

Then take this and multiply it by 6 to get :

393.103448

Round it to the nearest whole number to get:

393 bacteria

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In Neil's city, the temperature is 72.6 degrees and is rising 1.3 degrees each hour. In Sheppard's city, the temperature is 80.4
klio [65]

Answer:

2.5 hours

Step-by-step explanation:

Given that :

Temperature in Neil's city :

72.6° and rising by 1.3° per hour

Temperature in Sheppard's city :

80.4° and dropping by 1.82° per hour

In how many hours will the temperature in Neil's city be no less than the temperature in Sheppard's city

Let number of hours = h

Hence, Neil city :

72.6 + 1.3h

Sheppard city:

80.4 - 1.82h

72.6 + 1.3h ≥ 80.4 - 1.82h

1.3h + 1.82h ≥ 80.4 - 72.6

3.12h ≥ 7.8

h ≥ 2.5

Two and half hours (2 hours 30 minutes)

8 0
3 years ago
An ant crept to a hole, which was 300 cm away.
ohaa [14]

Answer:

Answer 10 min

Step-by-step explanation:

Because if it crawls 40 cm per minute but it goes back 10 cm because of wind then you have to do 40-10 = 30 then you do 300 divided by 30 to get the time.

Hope this helped!!!

8 0
3 years ago
Penguins spend almost 75% of their lives in the sea. An Emperor Penguin in the wild has a life span of about 18 years. About how
svp [43]
About 13.5 years 

Hope this helped! :)
4 0
3 years ago
Read 2 more answers
Combine the terms to simplify the expression: 5y+12x-y-8x
Sedbober [7]

Answer: 5y + 4x

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
What is 8(-9-5x) simplified
VLD [36.1K]
<span>8(-9-5x) 
</span>=8(-9) - 8(5x)
= -72 - 40x
= - 40x - 72

expand by using distributive property

hope it helps
8 0
3 years ago
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